After stabilizing a video and rendering it, I have more shake, why?
To stabilize such a simple shot you just need a few trackers in the scene.

This is one of those situations where having more trackers is not necessarily better. 4 trackers spread far apart in the picture will do.

Once you track those points you should have enough information to stabilize, you need to select which ones you want to use to determine location and which ones to use for rotation and scale.

A couple of trackers should be enough for location, but I would use all four for rotation and scale.

Then set autoscale and adjust the Max value so that the image is not too cropped.



You can evaluate the shot by enabling Display Stabilization.


You will notice that she stabilization is far from perfect, but the remaining motion is due to the rolling shutter in the camera, giving you what is called the "Jello Effect" there is nothing to be done about that in blender...

You are ready to render the shot using your current node setup.